<p>➀ The article discusses the potential of diamond semiconductors to revolutionize power electronics due to their unmatched thermal conductivity and wide bandgap.</p><p>➁ Researchers at Saga University have developed the first diamond n-channel MOSFET, demonstrating high field-effect mobility and stability at high temperatures.</p><p>➂ Companies like Adamant Namiki Precision Jewel Co, Ltd, Saga University, Element Six, and Cree are leading the way in diamond semiconductor research and commercialization.</p>